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    <title>Box selection example</title>
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          <h4 id="title">Box selection example</h4>
          <p id="shortdesc">Using a DragBox interaction to select features.</p>
          <div id="docs"><p>This example shows how to use a <code>DragBox</code> interaction to select features. Selected features are added to the feature overlay of a select interaction (<code>ol.interaction.Select</code>) for highlighting.</p> <p>Use <code>Ctrl+drag</code> (<code>Meta+drag</code> on Mac) to draw boxes.</p>
</div>
          <div id="tags">DragBox, feature, selection, box</div>
          <div id="api-links">Related API documentation: <ul class="inline"><li><a href="../apidoc/ol.Map.html" title="API documentation for ol.Map">ol.Map</a></li>,<li><a href="../apidoc/ol.View.html" title="API documentation for ol.View">ol.View</a></li>,<li><a href="../apidoc/ol.events.condition.html" title="API documentation for ol.events.condition">ol.events.condition</a></li>,<li><a href="../apidoc/ol.format.GeoJSON.html" title="API documentation for ol.format.GeoJSON">ol.format.GeoJSON</a></li>,<li><a href="../apidoc/ol.interaction.DragBox.html" title="API documentation for ol.interaction.DragBox">ol.interaction.DragBox</a></li>,<li><a href="../apidoc/ol.interaction.Select.html" title="API documentation for ol.interaction.Select">ol.interaction.Select</a></li>,<li><a href="../apidoc/ol.layer.Tile.html" title="API documentation for ol.layer.Tile">ol.layer.Tile</a></li>,<li><a href="../apidoc/ol.layer.Vector.html" title="API documentation for ol.layer.Vector">ol.layer.Vector</a></li>,<li><a href="../apidoc/ol.source.OSM.html" title="API documentation for ol.source.OSM">ol.source.OSM</a></li>,<li><a href="../apidoc/ol.source.Vector.html" title="API documentation for ol.source.Vector">ol.source.Vector</a></li></ul></div>
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        <form method="POST" id="jsfiddle-form" target="_blank" action="http://jsfiddle.net/api/post/jquery/1.11.0/">
          <textarea class="hidden" name="js">var vectorSource &#x3D; new ol.source.Vector({
  url: &#x27;data/geojson/countries.geojson&#x27;,
  format: new ol.format.GeoJSON()
});


var map &#x3D; new ol.Map({
  layers: [
    new ol.layer.Tile({
      source: new ol.source.OSM()
    }),
    new ol.layer.Vector({
      source: vectorSource
    })
  ],
  renderer: &#x27;canvas&#x27;,
  target: &#x27;map&#x27;,
  view: new ol.View({
    center: [0, 0],
    zoom: 2
  })
});

// a normal select interaction to handle click
var select &#x3D; new ol.interaction.Select();
map.addInteraction(select);

var selectedFeatures &#x3D; select.getFeatures();

// a DragBox interaction used to select features by drawing boxes
var dragBox &#x3D; new ol.interaction.DragBox({
  condition: ol.events.condition.platformModifierKeyOnly
});

map.addInteraction(dragBox);

var infoBox &#x3D; document.getElementById(&#x27;info&#x27;);

dragBox.on(&#x27;boxend&#x27;, function(e) {
  // features that intersect the box are added to the collection of
  // selected features, and their names are displayed in the &quot;info&quot;
  // div
  var info &#x3D; [];
  var extent &#x3D; dragBox.getGeometry().getExtent();
  vectorSource.forEachFeatureIntersectingExtent(extent, function(feature) {
    selectedFeatures.push(feature);
    info.push(feature.get(&#x27;name&#x27;));
  });
  if (info.length &gt; 0) {
    infoBox.innerHTML &#x3D; info.join(&#x27;, &#x27;);
  }
});

// clear selection when drawing a new box and when clicking on the map
dragBox.on(&#x27;boxstart&#x27;, function(e) {
  selectedFeatures.clear();
  infoBox.innerHTML &#x3D; &#x27;&amp;nbsp;&#x27;;
});
map.on(&#x27;click&#x27;, function() {
  selectedFeatures.clear();
  infoBox.innerHTML &#x3D; &#x27;&amp;nbsp;&#x27;;
});
</textarea>
          <textarea class="hidden" name="css">.ol-dragbox {
  background-color: rgba(255,255,255,0.4);
  border-color: rgba(100,150,0,1);
}
</textarea>
          <textarea class="hidden" name="html">&lt;div class&#x3D;&quot;row-fluid&quot;&gt;
  &lt;div class&#x3D;&quot;span12&quot;&gt;
    &lt;div id&#x3D;&quot;map&quot; class&#x3D;&quot;map&quot;&gt;&lt;/div&gt;
  &lt;/div&gt;
  &lt;div class&#x3D;&quot;span4 offset4 pull-right&quot;&gt;
    &lt;div id&#x3D;&quot;info&quot; class&#x3D;&quot;alert alert-success&quot;&gt;
      &amp;nbsp;
    &lt;/div&gt;
  &lt;/div&gt;
&lt;/div&gt;
</textarea>
          <input type="hidden" name="wrap" value="l">
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        </form>
        <pre><code id="example-source" class="language-markup">&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
&lt;title&gt;Box selection example&lt;/title&gt;
&lt;script src="https://code.jquery.com/jquery-1.11.2.min.js"&gt;&lt;/script&gt;
&lt;link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css"&gt;
&lt;script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"&gt;&lt;/script&gt;
&lt;link rel="stylesheet" href="http://openlayers.org/en/v3.11.1/css/ol.css" type="text/css"&gt;
&lt;script src="http://openlayers.org/en/v3.11.1/build/ol.js"&gt;&lt;/script&gt;

&lt;style&gt;
.ol-dragbox {
  background-color: rgba(255,255,255,0.4);
  border-color: rgba(100,150,0,1);
}

&lt;/style&gt;
&lt;/head&gt;
&lt;body&gt;
&lt;div class="container-fluid"&gt;

&lt;div class&#x3D;&quot;row-fluid&quot;&gt;
  &lt;div class&#x3D;&quot;span12&quot;&gt;
    &lt;div id&#x3D;&quot;map&quot; class&#x3D;&quot;map&quot;&gt;&lt;/div&gt;
  &lt;/div&gt;
  &lt;div class&#x3D;&quot;span4 offset4 pull-right&quot;&gt;
    &lt;div id&#x3D;&quot;info&quot; class&#x3D;&quot;alert alert-success&quot;&gt;
      &amp;nbsp;
    &lt;/div&gt;
  &lt;/div&gt;
&lt;/div&gt;

&lt;/div&gt;
&lt;script&gt;
var vectorSource &#x3D; new ol.source.Vector({
  url: &#x27;data/geojson/countries.geojson&#x27;,
  format: new ol.format.GeoJSON()
});


var map &#x3D; new ol.Map({
  layers: [
    new ol.layer.Tile({
      source: new ol.source.OSM()
    }),
    new ol.layer.Vector({
      source: vectorSource
    })
  ],
  renderer: &#x27;canvas&#x27;,
  target: &#x27;map&#x27;,
  view: new ol.View({
    center: [0, 0],
    zoom: 2
  })
});

// a normal select interaction to handle click
var select &#x3D; new ol.interaction.Select();
map.addInteraction(select);

var selectedFeatures &#x3D; select.getFeatures();

// a DragBox interaction used to select features by drawing boxes
var dragBox &#x3D; new ol.interaction.DragBox({
  condition: ol.events.condition.platformModifierKeyOnly
});

map.addInteraction(dragBox);

var infoBox &#x3D; document.getElementById(&#x27;info&#x27;);

dragBox.on(&#x27;boxend&#x27;, function(e) {
  // features that intersect the box are added to the collection of
  // selected features, and their names are displayed in the &quot;info&quot;
  // div
  var info &#x3D; [];
  var extent &#x3D; dragBox.getGeometry().getExtent();
  vectorSource.forEachFeatureIntersectingExtent(extent, function(feature) {
    selectedFeatures.push(feature);
    info.push(feature.get(&#x27;name&#x27;));
  });
  if (info.length &gt; 0) {
    infoBox.innerHTML &#x3D; info.join(&#x27;, &#x27;);
  }
});

// clear selection when drawing a new box and when clicking on the map
dragBox.on(&#x27;boxstart&#x27;, function(e) {
  selectedFeatures.clear();
  infoBox.innerHTML &#x3D; &#x27;&amp;nbsp;&#x27;;
});
map.on(&#x27;click&#x27;, function() {
  selectedFeatures.clear();
  infoBox.innerHTML &#x3D; &#x27;&amp;nbsp;&#x27;;
});

&lt;/script&gt;
&lt;/body&gt;
&lt;/html&gt;</code></pre>
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